Zac Efron Shirtless in The Neighbors

We first got to know Zac Efron during the two seasons he appeared on the WB’s short-lived drama Summerland. But of course, it was his role as Troy in the three installments of Disney’s High School Musical that really put him on the map.

Since his days of dancing and singing down the hallway, Zac’s gone on to create quite the movie career for himself. He’s starred in everything from romantic fantasies to bromantic comedies, and has taken his shirt off a lot along the way!

Despite having one of the hottest sets of abs in Hollywood, Zac isn’t always eager to show them off. In fact, while talking about his upcoming comedy Neighbors with Seth Rogen, Zac revealed that he was worried the entire film would find him sans clothing.

“The second day of filming was [me shirtless at] Abercrombie and Fitch,” he told MTV News. “I was standing here going, “F—k, this is my nightmare.”

Zac may not appreciate being shirtless on camera, but we certainly do! We appreciate it so much, in fact, it’s hard to even remember a time when Zac wasn’t the beefy dude we see before us. My, how times have changed!

Having trouble remembering what Zac looked like before he got hot? Click through to see his transformation!